Conic Sections

Question 1

Which image shows a plane slicing a cone to produce an ellipse?

Revolt · Accepted Answer

[Image: 2 cones are stacked at their points. A plane goes ...]

Question 2

–7.875–8.1257.875✔ 8.125

Revolt · Accepted Answer

✔ 8.125

Question 3

(2, –8.125)(2, –7.875)✔ (2, 7.875)(2, 8.125)

Revolt · Accepted Answer

✔ (2, 7.875)

Question 4

0.125✔ 0.528

Revolt · Accepted Answer

✔ 0.5

Question 5

Which conic section is formed when a plane intersects the central axis of a double-napped cone at a 90° angle?

Revolt · Accepted Answer

circle

Question 6

What describes θ when an ellipse is created from an intersection of a plane and double-napped cone?

Revolt · Accepted Answer

α < θ < 90⁰

Question 7

Complete the statements to describe the graph that represents the equation (y – 8) = –2(x – 2)2.

Revolt · Accepted Answer

The vertex is .: (2, 8); The directrix is y = .: 8.125; The focus is .: (2, 7.875); The focal width is .: 0.5

Question 8

✔ (2, 8)(2, –8)(–2, 8)(–2, –8)

Revolt · Accepted Answer

✔ (2, 8); The vertex is .: (2, 8); The directrix is y = .: 8.125; The focus is .: (2, 7.875); The focal width is .: 0.5

Question 9

Which equation describes the circle?

Revolt · Accepted Answer

(x – 4)2 + (y + 1)2 = 25

Question 10

Which equation has a vertex at (0, 5) and focus of ?

Revolt · Accepted Answer

Answer image: //media.edgenuity.com/EVresources/7895df44315a532c9d828d386a260687.png

Conic Sections Answers